LG G6 vs. Samsung Galaxy S21 Ultra 5G

Phone Comparison, Reviews and Tests

Side by side comparison and review of LG G6 and Samsung Galaxy S21 Ultra 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.

Phone Specifications Comparison

LG G6 vs. Samsung Galaxy S21 Ultra 5G Comparison Chart
DESIGN AND DIMENSIONS LG G6 Samsung Galaxy S21 Ultra 5G
Product Type Smartphone Smartphone
Manufacturer Model Number - SM-G998B/DS
Form Factor Touch Touch
Height 148.9 mm 161.5 mm Samsung Galaxy S21 Ultra 5G has greater height than LG G6.
Width 71.9 mm 75.6 mm Samsung Galaxy S21 Ultra 5G has greater width than LG G6.
Depth 7.9 mm 8.9 mm LG G6 is narrower than LG G6.
Weight 163 g 227 g LG G6 is lighter than LG G6.
Body Colour Black | Ice platinum Phantom silver | Phantom black | Phantom navy | Phantom brown | Phantom titanium
Body Material Gorilla glass 5 -
Protection Shockproof, dustproof, splashproof, scratch-resistant, water-resistant Dustproof, splashproof, water-resistant
Waterproof (Water-resistant) Yes Yes Both phones are waterproof.
IP rating IEC 60529 IP68 IP68
SAR Value - 1.58 W/kg (body), 0.714 W/kg (head), 2.56 W/kg (limb)
Integrated Components FM radio -
Connector Type Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM Nano SIM, Electronic SIM card (e-SIM)
SIM Card Qty Single-SIM Dual-SIM
DISPLAY LG G6 Samsung Galaxy S21 Ultra 5G
Display Type LCD display OLED display
Display Technology IPS Infinity-O Dynamic AMOLED 2X
Screen Size (Display Size) 5.7" 6.8" Samsung Galaxy S21 Ultra 5G has larger screen size than LG G6.
Screen Resolution (Display Resolution) 2880 x 1440 pixels 3200 x 1440 pixels Samsung Galaxy S21 Ultra 5G has better screen resolution than LG G6.
Display Format QHD+ QHD+
Pixel Density 564 ppi 515 ppi LG G6 has better pixel density than Samsung Galaxy S21 Ultra 5G.
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
HDR Yes Yes Both phones have HDR.
HDR Technology HDR10 HDR10+
Display Enhancement Technology Dolby Vision Eye Comfort Shield
Display Refresh Rate - 120 Hz
Display Features In-Cell Display Technology, Always-on display, FullVision display Edge Screen, AOD(Always On Display)
Display Protection (Screen Protector) Corning Gorilla Glass 3 (scratch resistant glass), Corning Gorilla Glass 5 (scratch resistant glass) Corning Gorilla Glass Victus (scratch resistant glass)
PROCESSOR LG G6 Samsung Galaxy S21 Ultra 5G
Processor Type (CPU) Qualcomm Snapdragon 821 Samsung Exynos 2100
Processor Number MSM8996 Pro -
Clock Speed 2.35 GHz 2.9 GHz Samsung Galaxy S21 Ultra 5G has higher clock speed than LG G6.
Processor Core Qty Quad-core 8-core Samsung Galaxy S21 Ultra 5G has higher processor core quantity than LG G6.
64-bit Architecture Yes - LG G6 has 64-bit architecture.
Graphics System (GPU) Qualcomm ADRENO 530 Mali-G78 MP14
MEMORY LG G6 Samsung Galaxy S21 Ultra 5G
RAM 4 GB LPDDR5 SDRAM - 12 GB Samsung Galaxy S21 Ultra 5G has more RAM than LG G6.
Internal Memory Size (Storage Capacity) 32 GB 128 GB Samsung Galaxy S21 Ultra 5G has more internal memory than LG G6.
User Memory - 101.7 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB -
CAMERA LG G6 Samsung Galaxy S21 Ultra 5G
MAIN CAMERA
Number of Main Cameras 2 4
Sensor Resolution 13 Megapixel 12 Megapixel LG G6 has better camera resolution than Samsung Galaxy S21 Ultra 5G.
Lens Type Telephoto lens Ultra wide-angle lens
Lens Aperture F/1.8 F/2.2 LG G6 has better lens aperture than LG G6.
Field of View (FoV) - 120 degree(s)
Pixel Size - 1.4 μm
Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) Optical Image Stabiliser (OIS) Both phones have optical image stabilization.
Focus Adjustment Automatic Automatic
Laser Auto Focus - Yes
Optical Zoom - 3x
Digital Zoom 8x 100x Samsung Galaxy S21 Ultra 5G has better digital zoom than LG G6.
Self-Timer Delay - Yes
Special Effects HDR Face retouch, Grid Line
HDR Mode - Auto HDR mode
Camera Modes Slow motion video, Panorama, Time-lapse mode, BurstShot, manual mode, Cheese Shot, Food mode, Timer Shot, Snap video mode, Popout Mode, 360 Panorama mode Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Night, Motion Photo, Mountain, Single Take, Pro Video, Director's View
Light Source LED light High CRI LED flash
Video Resolutions 1920 x 1080 (1080p) at 60 fps, 3840 x 2160 (4K) at 30 fps 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps
Camera Features (Functions) Phase Detect Auto-Focus (PDAF), Closed loop processing, geotagging, RAW image capture, camera roll view, Steady Record 2.0, Square Camera Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Quick Measure, Zoom-In Mic, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video
SECOND CAMERA
Sensor Resolution (2nd Camera) 13 Megapixel 108 Megapixel Samsung Galaxy S21 Ultra 5G has better second camera resolution than LG G6.
Sensor Size (2nd Camera) - 1/1.33"
Lens Type (2nd Camera) Wide-angle lens Wide-angle lens
Lens Aperture (2nd Camera) F/2.4 F/1.8 Samsung Galaxy S21 Ultra 5G has better second camera lens aperture than LG G6.
Field of View (2nd Camera) - 83 degree(s)
Pixel Size (2nd Camera) - 0.8 μm
Camera Features (2nd Camera) - Phase Detect Auto-Focus (PDAF), OIS (Optical Image Stabilisation)
THIRD CAMERA
Sensor Resolution (3rd Camera) - 10 Megapixel
Lens Type (3rd Camera) - Telephoto lens
Lens Aperture (3rd Camera) - F/2.4
Field of View (3rd Camera) - 35 degree(s)
Pixel Size (3rd Camera) - 1.22 μm
Camera Features (3rd Camera) - Dual Pixel AF
FOURTH CAMERA
Sensor Resolution (4th Camera) - 10 Megapixel
Lens Type (4th Camera) - Telephoto lens
Lens Aperture (4th Camera) - F/4.9
Field of View (4th Camera) - 10 degree(s)
Pixel Size (4th Camera) - 1.22 μm
Camera Features (4th Camera) - Dual Pixel AF
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 5 Megapixel 40 Megapixels Samsung Galaxy S21 Ultra 5G has better front camera resolution than LG G6.
Lens Type (Front) Wide-angle lens -
Lens Aperture (Front) F/2.2 F/2.2 Both phones have the same front camera lens aperture.
Field of View (Front) - 80 degree(s)
Pixel Size (Front) - 0.7 μm
Focus Adjustment - Automatic
Camera Modes (Front) Time-lapse mode, Gesture Shot, Share Shot function, Auto Shot, GIF animation function, Popout Mode, Square Camera -
Light Source (Front) Flash -
Video Resolutions (Front) 1920 x 1080 (1080p) -
Camera Features (Front) Electronic Image Stabiliser (EIS) Phase Detect Auto-Focus (PDAF)
BATTERY AND CHARGING LG G6 Samsung Galaxy S21 Ultra 5G
Battery Capacity (Battery Size) 3300 mAh 5000 mAh Samsung Galaxy S21 Ultra 5G has larger battery capacity than LG G6.
Fast Charging Technology Qualcomm Quick Charge 3.0 Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 Both phones have fast charging technology.
Wireless Charging - Yes Samsung Galaxy S21 Ultra 5G can be charged wirelessly.
Wireless Charging Standards - WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare
Talk Time - 2460 minutes
Run Time Details - Talk (4G): up to 2460 min
Active online usage (LTE): up to 18 hrs
Active online usage (Wi-Fi): up to 18 hrs
Playback (wireless video): up to 22 hrs
Playback (wireless audio): up to 81 hrs
Battery Technology Lithium polymer -
CELLULAR LG G6 Samsung Galaxy S21 Ultra 5G
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 5G Samsung Galaxy S21 Ultra 5G has more advanced generation mobile network.
Operating System Android 7.0 Nougat Android 11
User Interface LG UX 6.0 -
Intelligent Assistant Google Assistant Bixby
Payment Technology Android Pay Samsung Pay
Navigation GPS GPS, GLONASS, BeiDou, Galileo
COMMUNICATIONS LG G6 Samsung Galaxy S21 Ultra 5G
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE FDD-LTE, TDD-LTE, 5G NR FR1
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band - Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency - 2100, 1900, 1700, 850, 900
4G LTE Band - Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66
4G LTE Frequency - FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3
5G NR Band - N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, n78, n40
5G NR Frequency - FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3700, TDD TD 3500, TDD 2300
Wireless Interface IEEE 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac/ax
Bluetooth Bluetooth 4.2 Bluetooth 5.2
Bluetooth Profiles HFP, HSP, OPP, PAN, AVRCP, HID, SAP, PBAP, MAP, HOGP -
NFC Yes Yes Both phones have an NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA LG G6 Samsung Galaxy S21 Ultra 5G
Supported Digital Audio Standards WAV, WMA, AAC, MP3, AAC +, OGG, eAAC+, MIDI, MP4, AMR-WB, AMR-NB WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128
Supported Digital Video Standards MKV, FLV, AVI, M-JPEG, XviD, MPEG-4, WMV, ASF, 3GP, H.263, TS, WebM, VP8, VP9, Theora, OGM, MPEG4-ASP, MPEG4-SP, H.264 BP, H.264 MP, H.264 HP, H.265 Main, H.265 Main10 MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4
Sound Enhancements - Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound
FEATURES LG G6 Samsung Galaxy S21 Ultra 5G
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, hall sensor Accelerometer, ambient light sensor, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor
Security Devices Fingerprint reader Fingerprint reader (under display), face recognition
Additional Phone Features TTY compatible, software updates FOTA (Firmware Over The Air), multitasking, HD Voice, Wi-Fi Calling, Wireless Emergency Alerts function, QuickMemo+ function, Smart Cleaning, Alarm Clock, Noise suppression by NXP Solution, Fast Charging, HD audio recorder, DriveMode, TTD compatible Air View, MIMO technology, Smart Select, Samsung KNOX, Smart View, Live message, Screen off memo, Bixby Vision, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, PENUP, Bixby key, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command
Android Enterprise Recommended Yes -
OTHERS LG G6 Samsung Galaxy S21 Ultra 5G
Included Accessories Power adapter, USB-C cable SIM card removal tool, USB-C to USB-C cable
Compliant Standards IEC 60529 IP68, MIL-STD 810G, HAC (Hearing Aid Compatible) IP68, HAC (Hearing Aid Compatible)
Max Depth of Water Resistance 1.5 m 1.5 m
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